S-93585A295 5/16"-18 x 1" Thumb Screws

Key Features & Benefits at a Glance

• Superior hand-tightening grip with deep knurling on the 3/4" diameter head for slip-resistant operation without tools
• Excellent corrosion resistance provided by 18-8 stainless steel construction for long service life in demanding environments
• Reliable thread engagement with fully threaded 5/16"-18 UNC coarse threading that resists cross-threading and enables quick installation
• High mechanical strength delivering 80,000 psi tensile strength and Rockwell B83 hardness for durable, vibration-resistant fastening
• Precision manufacturing with Class 2A thread fit ensuring consistent performance and proper mating with standard nuts
• Quick access design featuring a high-profile round head that provides ample surface area for comfortable manual operation
• Environmental compliance meeting RoHS 3 and REACH regulations for safe use across various industrial applications

Professional Applications & Engineering Value

This 18-8 stainless steel thumb screw solves critical access panel and frequent adjustment challenges where tool-free operation is essential. The knurled head texture provides exceptional grip even with greasy hands or when wearing gloves, eliminating slippage during tightening. The coarse UNC threading (5/16"-18) enables rapid installation and removal while resisting jamming in high-vibration environments. Manufactured from corrosion-resistant stainless steel, these thumb screws maintain integrity in humid, chemical, or outdoor applications where rust compromises ordinary fasteners. The fully threaded design with Class 2A fit ensures consistent engagement depth and reliable clamping force for industrial equipment, electronic enclosures, machinery guards, and maintenance access points requiring repeated service.

Specification Summary & Compliance

This thumb screw features precision 5/16"-18 UNC coarse threading with Class 2A fit per ASME B1.1 standards, ensuring proper dimensional accuracy and interchangeability. The fastener is manufactured from 18-8 stainless steel with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. Mechanical properties include 80,000 psi tensile strength and Rockwell B83 hardness for dependable performance in industrial applications.